PROFOUNDNESS
profundity, profoundness
(noun) intellectual depth; penetrating knowledge; keen insight; etc; “the depth of my feeling”; “the profoundness of the silence”
deepness, profundity, profoundness
(noun) the quality of being physically deep; “the profundity of the mine was almost a mile”
astuteness, profundity, profoundness, depth, deepness
(noun) the intellectual ability to penetrate deeply into ideas
reconditeness, abstruseness, abstrusity, profoundness, profundity
(noun) wisdom that is recondite and abstruse and profound; “the anthropologist was impressed by the reconditeness of the native proverbs”
profoundness
(noun) extremeness of degree; “the profoundness of his ignorance”
Source: WordNet® 3.1
Etymology
Noun
profoundness (usually uncountable, plural profoundnesses)
The quality of being profound; profundity
Source: Wiktionary
Pro*found"ness, n.
Definition: The quality or state of being profound; profundity; depth.
Hooker.
Source: Webster’s Unabridged Dictionary 1913 Edition